Presses for attaching metal fittings to material



Aug. 28, 1956 H. H. WOOD PRESSES FOR ATTACHING METAL FITTINGS TO MATERIAL Filed NOV. 2, 1955 4 Sheets-Sheet l Inventor H. H. Wood B Q I t I LtZM Attorneys H. H. WOOD Aug. 28, 1956 PRESSES FOR ATTACHING METAL FITTINGS TO MATERIAL Filed NOV. 2, 1955 4 Sheets-Sheet 2 3 4 a. fifig 3 y w m M a I 3 M [I as 37 I Inventor H.H.L1/oc1d Ator ey5 Aug. 28, 1956 2,760,194

PRESSES FOR ATTACHING METAL FITTINGS TO MATERIAL Filed Nov. 2, 1953 H. H. WOOD 4 Sheets-Sheet 3 r w m A n 1 n w H. n w M 4 v 5 7 II: 5 0 4 4 a w M n#Y// WV); /m Mm w {008* W aw i w 3 w W w .X I:- H nw s PRESSES FOR ATTACHING METAL FITTINGS TO MATERIAL Filed Nov. 2, 1953 H. H. WOOD Aug. 28, 1956 4 Sheets-Sheet 4 K 18 10 g-vw Inventor H.H. W000 Attorneys United States Patent PRESSES FOR ATTACHING METAL FITTINGS TO MATERIAL Herbert Howard Wood, Birmingham, England, assignor to Thomas Walker Limited, Birmingham, England, a British company Application November 2, 1953, Serial No. 389,787

Claims priority, application Great Britain December 1, 1952 3 Claims. (Cl. 1-4) This invention relates to presses for attaching metal fittings or parts to textile or other material, by causing the fitting or part, or prongs or projections thereon, to pass through the material, so that the prongs or projections, or an edge of the fitting or part, strike or bear against an anvil on the bed of the press, so as to be bent or clenched over. The invention relates more particularly, but not exclusively, to presses for the attachment of twopart fittings comprising a pronged part and an apertured plate, such as a staple and back-plate or a hook and backplate, to the opposite sides of a piece of textile material,

.such, for example, as to the opposite sides of a waistband for trousers.

According to the present invention, a press for attaching a pronged or other part to textile or other material comprises a pivoted member or pivoted arm having a carrier head or housing normally presented forwards for receiving from the front the pronged or other part to be attached, in combination with a pressure lever which is connected to, or which co-operates with, a punch or plunger movable within the said carrier head or housing, the said pressure lever being arranged to operate the pivoted member or arm through the medium of a spring, and the said spring acting to separate or displace the carrier head or housing from the pressure lever so that the punch or plunger normally takes up a retracted position in the carrier head or housing, whereby when the pressure lever is moved from an out-of-use position towards an anvil of the press the pivoted member or arm and the pressure lever are caused to move together until the pivoted member or arm is arrested by an abutment, when further movement of the pressure lever causes the punch or plunger to move relatively to the carrier head or housing, against the action of the aforesaid spring, into an advanced position, to cause the pronged or other part to pass through the material and to be bent over by the anvil. The anvil may serve as the abutment for arresting the pivoted member or arm; and, preferably, the carrier head or housing has an aperture or grooved: part which is adapted to receive the pronged or other part to be attached and which is arranged to be forwardlypresentedwhen the pressure lever is in its out-of-use position, in order to facilitate loading of the pronged or other part. The pressure lever may be operable by means of a handle thereon; or the said lever may be operable through pedal or treadle means. The pressure lever and the pivoted member or arm may be arranged to turn, when operated, about the same axis.

Figure l of the accompanying drawings shows, in vertical section, a press for attaching a fastening hook (used in combination with a back-plate) to a trouser waistband, the said press which is adapted to be operated by a treadle or pedal being constructed in accordance with the present invention and being represented with the pressure lever, and the pivoted arm having the carrier head or housing, in a raised or out-of-use position.

Figures 2 and 3 show a plan view and a front elevation,

"ice

respectively, of the press shown in Figure 1, part of the bed or base of the press being omitted.

Figure 4 is a vertical section similar to Figure 1, but showing the pressure lever and arm in a lowered position in which the arm is arrested by the anvil of the press.

Figure 5 is a fragmentary vertical section, on a larger scale, showing the pressure lever moved down beyond the position in which it is shown in Figure 4, so as to cause the punch or plunger of the press to move relatively to the carrier head or housing to cause prongs on the backplate for the hook to pass through the material of the waistband and to be clenched beneath the hook.

Figure 6 shows a fastening hook and back-plate which can be attached in place by means of the press shown in Figures 1 to 5.

Figure 7 shows a press similar to that shown in Figures 1 to 5, but modified for manual operation.

Figure 8 shows, in vertical section, a press for attaching a staple and back-plate to a trouser waistband, the said press, which constitutes a modified embodiment of the present invention, being represented with the pressure lever, and the pivoted arm having the carrier head or housing, in a raised or out-of-use position, the outer part of the pressure lever being omitted.

Figure 9 is a vertical section similar to Figure 8, but showing the pressure lever and arm in a lowered position, with the punch or plunger moved relatively to the carrier head or housing so as to effect clenching of the staple.

Figure 10 is a section on the line XX, Figure 8.

Figure 11 is on a smaller scale, and shows a plan view of the press represented in Figures 8 to 10, the complete pressure lever being shown in this figure.

Figure 12 represents a staple and back-plate which can be attached in place by means of the press shown in Figures 8 to 11.

Referring to Figures 1 to 6 of the drawings, a press 1 is provided which is intended for attaching a fastening hook 2 to a trousers waistband 3 (shown in Figure 5 only), the hook 2 to be attached consisting of a triangular sheet-metal plate having one end, shown at 4, bent over into hook form and the plate body having a number of slots or apertures 5 therein. For example, three such slots 5 may be provided, as shown. This hook 2 is attached to the waistband 3 by means of a back-plate 6 having at its edge bent-up prongs 7 located to correspond to the slots or apertures 5 in the hook member 2, the waistband 3 being laid upon the hook member and the prongs 7 of the back-plate being passed through said waistband and through the slots 5 in the hook member and then clenched over on to the face of the latter.

The press 1 for attaching the hook member 2 in the above described manner comprises a horizontal bed or base 8 adapted to be bolted upon a work-bench and having upon its top face parallel guides 9 between which the waistband 3 can be fed to an anvil 10 located at the end of the guides 9. The anvil 10 has a locating recess 11 in one edge to receive the bent-over portion 4 of the hook 2, and on its top face it may have, as shown, locating pegs 12 to engage locating notches 13 in the plate portion of the hook member 2. The said top face of the anvil 10 also has in it rounded clenching depressions 14 located so as to lie beneath the slots or apertures 5 in the hook plate 2 when the latter is laid in place on the anvil.

The bed or base 8 of the press 1 is extended to one side of the anvil, and this lateral extension supports two spaced-apart upstanding bracket lugs -15 between which is pivoted, by means of a pin 16, one end of an arm 17. The said arm 17 is forked at its pivoted end, and is provided at its other or outer end with a carrier head 18 in which a through rectangular aperture 19 is formed, extending from one face to the other. Within this aperture 19 is mounted a correspondingly-shaped plunger or in thepress bed 8.

' is nearer the anvil 10.

3 punchwhich can slide freely in the aperture 19,.being guided by the walls thereof. The arm 17 is of such a length, and is so disposed, that when it is turned down about its pivot 16the carrier head 18 can lie horizontally upon the hook member 2 placed upon the anvil10, as

shown in Figures 4 and 5.

The end of the plunger or punch 20 remote from the anvil 10 projects outside the carrier head 18 and is jointed at 21 to the outer end of a pressure lever 22 pivoted at its inner end upon the same pin 16 as that upon which --the arm 17 is mounted. This pressure lever 22 moves between the branches, shown at 17 of the forked por- -tion of the arm 17, and its inner side edge is provided, at a point between its ends, with a forked rigid arm 23 that has its end jointed to a vertical rod or link 24 (shown only in Figures 1 and'4) that passes through a slot 25 This rod or link 24 also passes through the workbench on which the press is mounted and its lower end is connected to a pedal or treadle (not shown), so that foot pressure on the pedal or treadle will cause the pressure lever 22 to be turned down towards the anvil '8,

A coiled compression spring 26 is fitted between the arm 17 and the pressure lever 22, near the outer ends thereof, so as to tend to keep the carrier head 18 separated from the lever 22, with the plunger 20 taking up a retracted position in the outer portion of its guide aperture 1 9, thus leaving a recess portion 19 (:Figure l) at the forward end of the aperture 19, that is the end which In order to limit the amount of separation of the carrier head 18 and lever 22, astop pin 27 is provided on the rigid arm 23 on the lever 22, this stop 27 being engaged with the inner or front side edge of each of the branches 17 of the arm 17. The outer or rear side edge, shown at 28, of the pressure lever 22 is of convex arcuate form, and one end of a coiled tension spring 29 is connected to this edge 28 by means of a stud 30, the other end of the spring 29 being anchored to the bed 8. This tension spring 29 tends normally to hold the arm 17 and lever 22 in the substantially vertical or out-of-use position, shown in Figure 1, in which stop edges, such as 3'1, at the ends of the branches 1'7 are engaged with the top of the bed *8.

In use, when a hook member 2 has been properly located on the anvil 10, the arm 17 andwlever 22 being in the position shown in Figure l, the pronged back-plate 6.which is to attach said member 2 to the trouser waistband 3 is placed in the recess 19 formed by the end portion of the aperture 19, in the'carrier head 18 which is not occupied by the plunger '20, the said recess portion 19 being, when the arm -17 and lever 22 are substantially vertical, forwardly presented to facilitate loading of the back-plate 6 from the front, and the aperture 19 being of a size such that the back-plate 6 will be frictionally retained therein, with its prongs 7 presented outwards. After the waistband 3 has been placed over the hook member 2, the pedal is depressed, thereby drawing the pressure lever 22 downwards and causing the tension spring 29 to be extended and to wrap itself around the arcuate edge 28 of the lever 22. As the said pressure lever 22 turns, the arm 17 is moved with it through the medium of the interposed compression springs 26, which, however, maintains the carrier head 18 at the end of the arm 17 apart from the lever 22 until the carrier head 18 is arrested by the anvil 10. The head 18 then lies in the horizontal position shown in Figure 4. Further depression of the pedal then causes the pressure lever 22 to continue its angular movement, relatively to the I arm 17. The interposed spring 26 is thus further compressed and the plunger 20 moves through the aperture 19 in the carrier head 18 to an advanced position, so

" as to exert pressure on the back-plate 6 and cause the latter to move out from the aperture :19 so that its prongs 7 are forced through the waistband '3 and through the slots 5 in the hook member 2. The ends of the prongs 7 thus enter the clenching recesses 14 in the anvil 10, being thereby clenched on to the. under face of the hook member (Figure 5). When the pedal is released, the tension spring 29 restores the arm 17 and lever 22 to their initial vertical position.

If desired, the. pressure lever 22 of the press 1 described above may be adapted for manual operation, instead of being foot-operated, by securing a suitable handle 32 to the said lever 22 by bolts 33, as shown in Figure 7. The handle 32 has a suitable grip portion 34 at its outer end.

Figures 8 to l l represent a modified embodiment of the invention, and show a hand-operated press 35 which is adapted to attach a staple 36 and a back-plate 37 to opposite sides of a waistband 3 The staple 36 and backplate 37 are shown in perspective View in Figure 12. The staple 36 is substantially of an inverted U-shape and has prongs 38 at each end; whilst the back-plate 37 is of a dumb-bell shape in plan and has end slots 39 adapted to receive the staple prongs 38.

The aforesaid press 35 comprises a bed or base 40 provided at its rear end with a raised part 41 carrying a pair of spaced-apart bracket members 42 directed towards the opposite end of the bed 40 of the press and spaced vertically a short distance above the said bed. Pivoted between the outer ends of these bracket members 42 by a transverse pin 43 passing through the latter is an operating lever 44 which constitutes a pressure lever and which is forked for some distance from its inner pivoted end to provide branches 44 defining a slot 45. Located within this slot 45 is a short pivoted arm 46 which is mounted upon the same pivot pin 43 as the pressure lever 44. The outer end of this arm 46 is formed as a carrier head 47 adapted to hold the staple 50. Slidable within the aperture 48, and of an elongated rectangular cross-sectional shape so as to correspond with the cross-sectional shape of the said aperture, is a plunger or punch 51, which is pivotally attached to the two branches 44 of the forked end of the operating or pressure lever 44 by a transverse pin 52, the latter passing through slots 59 in the carrier head 47 to permit of a relative angular movement between the arm 46 and the lever 44, the pin 52 serving as a stop to limit such angular movement in either direction.

The edge of the carrier head 47 opposite to that having the spaced horns 49 is acted upon by the outer end of a blade spring 53, the other end of this spring 53 being secured by a screw 54 to the rear or outer longitudinal edge, shown at 55, of the lever 44. The said spring 53 acts so that it normally displaces the short arm 46 relatively to the lever 44 to the extent shown in Figure 8, so that a considerable portion of the head 47 at the end of the arm 46 projects externally beyond the branches 44 of the lever 44. When the arm 46 is in this position, the plunger 51 pivoted to the branches 44 is disposed in a retracted position so that its one end, shown at 56, lies at or near the inner ends of the grooves 50 in the horns 49, leaving the said grooves 50 free to receive the staple 36, which can be inserted therein until it engages the said plunger end 56. The latter is shaped to suit the shape of the staple 36.

The operating or pressure lever 44 normally lies tilted back as shown in Figure 8, so that the horned part of the apertured carrier head 47 is forwardly presented, to facilitate loading of the staple from the front, but the said lever 44 can be turned forwards about its pivot into the horizontal position shown in Figure 9, in which the carrier head 47 lies adjacent an anvil 57 provided on the press bed 40. The anvil 57 is provided with a suitable part for correctly locating the back-plate 37, and has clenching depressions 58 adapted to receive the prongs 38 of the staple.

Before the press is operated the staple 36 is fitted as shown in Figure 8 into the carrier head 47 at the end of the pivoted arm 46 and the back-plate 37 having a rounded leading edge is positioned on the anvil 57 with the trouser waistband 3 above the back-plate. The operating or pressure lever 44 of the press is now moved downwards towards the bed 40, causing the arm 46 to move with the said lever 44, but as soon as the horns 49 on the carrier head 47 engage the waistband 3 the movement of the arm 46 is arrested by the anvil 57, through the waistband 3 and the back-plate 37, and the plunger 51, on further downward movement of the operating or pressure lever 44, now moves relatively to the carrier head 47, against the action of the blade spring 53 with the result that the plunger 51 moves the staple 36 out from the carrier head 47 and the prongs 38 are forced through the material 3 and through the apertures of the back-plate 37, the said prongs 38 being curled over beneath the latter by the shaped depressions 58 in the anvil, as shown in Figure 9. As the operating lever 44 is moved fully downwards the pivoted arm 46 with the carrier head 47 formed at its end moves up relatively to the lever 44, the end of the blade spring 53 being forced upwards. When, however, the lever 44 is raised, after the stapling operation has been completed, the blade spring 53, acting on the head 47 of the arm 46, causes the said head 47 again to project beyond the lever 44 ready for receiving another staple.

A press according to the present invention may obviously be adapted for receiving other metal parts which are to be attached to textile or other material by clenching or bending over prongs or edges. For example, the press may be adapted for securing eyelets by turning over an end-edge of the eyelet on to a washer or the like.

I claim:

1. A press for attaching an article to material by a clenching operation, said press comprising: a base; an anvil mounted on said base; an arm pivotally mounted on said base with a free end extending over said anvil; a carrier head on the free end of said arm, said carrier head being mounted to strike the anvil when said arm is depressed, said carrier head having an article receiving and discharge aperture therein, said aperture being presented forwardly when said arm is raised; a pressure lever pivotally mounted adjacent the arm; spring means acting to displace the arm from the pressure lever; stop means serving to limit said displacement; said stop means co-operating with the arm when the pressure lever is moved rearwardly to provide a collective angular movement away from the anvil of the arm with the pressure lever, and a clenching punch movable in the aforesaid aperture in the carrier head and operable by movement of the pressure lever against the action of said spring means, the said punch normally taking a retracted position in the aperture whereby the mouth of said aperture provides means for receiving and holding an article to be clenched.

2. A press for attaching an article to material by a clenching operation, said press comprising: a base; an anvil mounted on a front portion of said base; an arm pivotally mounted on said base at a point remote from said anvil with a free end extending over said anvil; a carrier head on the free end of said arm, said carrier head being mounted to strike the anvil when said arm is depressed, said carrier head having an article receiving and dishcarge aperture therein, said aperture being presented forwardly when said arm is raised; a pressure lever pivotally mounted adjacent the arm; spring means acting to displace the arm from the pressure lever; stop means serving to limit said displacement; said stop means co-operating with the arm when the pressure lever is moved rearwardly to provide a collective angular movement away from the anvil of the arm with the pressure lever, and a clenching punch movable in the aforesaid aperture in the carrier head and operable by movement of the pressure lever against the action of said spring means, the said punch normally taking a retracted position in the aperture whereby the mouth of said aperture provides means for receiving and holding an article to be clenched; spring means acting to hold the arm and the lever in the aforesaid raised loading position; and stop means serving to preventmovement of the arm and the lever rearwards beyond this raised position under the action of the last-named spring means.

3. A press for attaching an article to material by a clenching operation, said press comprising: a base; an anvil mounted on a front portion of said base; an arm pivotally mounted on said base at a point remote from said anvil with a free end extending over said anvil; a carrier head on the free end of said arm, said carrier head mounted to strike the anvil when said arm is depressed, means for depressing said arm, said carrier head having an article receiving and discharge aperture therein, said aperture presented forwardly when said arm is raised; a pressure lever pivotally mounted on the pivot axis of the arm arranged to be capable of collective angular movement with the arm in a rearward direction away from the anvil; a forked inner portion on said lever receiving said arm; spring means acting to displace the arm from the pressure lever; a clenching punch movable in the aforesaid aperture in the carrier head; the arrangement for collective angular movement of said arm and pressure lever comprising a pivot pin pivotally connecting the punch to, and between the sides of, the forked inner portion of the pressure lever, said pivot pin passing through slots in opposed walls of the aperture in the carrier head, and said pressure lever operating said punch through the medium of said pin, the punch normally taking a retracted position in the aperture and the mouth of the aperture constituting means for receiving and holding an article to be clenched.

References Cited in the file of this patent UNITED STATES PATENTS 292,842 Nevius Feb. 5, 1884 1,442,212 Borchert Jan. 16, 1923 FOREIGN PATENTS 146,470 Germany Nov. 16, 1903 

